sql语句建表，并且自增加主键

sql语句建表，并且自增加主键

use [test]
CREATE TABLE [dbo].[Table_4]
(
	[userid] [int] IDENTITY(1,1) NOT NULL,
 CONSTRAINT [PK_Table_4] PRIMARY KEY CLUSTERED 
(
	[userid] ASC
)

) ON [PRIMARY]